I think the idea of 10x programmers gets so much pushback because it's often bundled with this kind of toxic hero worship. There's a difference between acknowledging the impressive ability of outliers, and idolizing heroic one-man efforts as the pinnacle of what we should all aspire to as software developers.
Incidentally, Carmack was not the only programmer on early id Software games, and Doom was far from the first 3d first-person game made. Arguably, it wasn't even that ambitious compared to, say, Ultima Underworld, but the programmers working on that get much less immediate recognition.
As a matter of fact, these discussions often remind me of that famous IGN quote of Warren Spector. Except we really should know better on HN.